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2 years ago

Neeedd helllp nowwwwwww!!!!! Please!!! Grad point Find the measure of 1.

Mathematics

1 answer:

otez555 [7]2 years ago

8 0

Maybe the answer is

<h3>Explanation</h3>

The L between 2 and 3 shows that yeah... it has a neat degree (sorry dont know how to explain lol) and so the triangle which has 3 side and total 180° will be 180° : 3 = 60 because the degree is neat. :v

#sorry my english sucks lol

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Kathy uses 7.8 pints of white paint and blue paint to paint her bedroom walls. 3/4

mel-nik [20]

Answer:

1.95

Step-by-step explanation:

8 0

3 years ago

A research group needs to determine a 90% confidence interval for the mean repair cost for all car insurance small claims. From

lutik1710 [3]

Answer:

a) $z = 1.645$

b) The should sample at least 293 small claims.

Step-by-step explanation:

We have that to find our $\alpha$ level, that is the subtraction of 1 by the confidence interval divided by 2. So:

$\alpha = \frac{1-0.9}{2} = 0.05$

Now, we have to find z in the Ztable as such z has a pvalue of $1-\alpha$ .

So it is z with a pvalue of $1-0.05 = 0.95$ , so $z = 1.645$ , which means that the answer of question a is z = 1.645.

Now, find the margin of error M as such

$M = z*\frac{\sigma}{\sqrt{n}}$

In which $\sigma$ is the standard deviation of the population and n is the size of the sample.

(b) If the group wants their estimate to have a maximum error of $12, how many small claims should they sample?

They should sample at least n small claims, in which n is found when

$M = 12, \sigma = 124.88$ . So

$M = z*\frac{\sigma}{\sqrt{n}}$

$12 = 1.645*\frac{124.88}{\sqrt{n}}$

$12\sqrt{n} = 205.43$

$\sqrt{n} = \frac{205.43}{12}$

$\sqrt{n} = 17.12$

$\sqrt{n}^{2} = (17.12)^{2}$

$n = 293$

The should sample at least 293 small claims.

8 0

2 years ago

Clare volunteers at a local library during the summer. Her work includes putting labels on 750 books.

Marizza181 [45]

Answer:

75 minutes

Step-by-step explanation: 750 divided by 10 is 75

7 0

3 years ago

Read 2 more answers

Um i need help sike just kidding this is just for fun get points 9+100

GrogVix [38]

Answer:

109 :P

Step-by-step explanation:

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2 years ago

Read 2 more answers

Find the radius of a circle with the given circumference. 12 in

vampirchik [111]

Step-by-step explanation:

Given 

circumference = 12 inch

π = 3.14

radius (r) = ?

We know 

circumference = 2πr 

12 = 2* 3.14 * r

r = 12 / 6.28

Therefore r = 1.91 inch

8 0

3 years ago